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crichtoniteCRICHTONITE, n. A mineral so called from Dr. Crichton, physician to the Emperor of Russia. It has a velvet black color, and crystalizes in very acute small rhomboids. It occurs in primitive rocks with octahedrite. |
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crichtoniteCRICHTONITE, n. A mineral so called from Dr. Crichton, physician to the Emperor of Russia. It has a velvet black color, and crystalizes in very acute small rhomboids. It occurs in primitive rocks with octahedrite. |